【實用醫療app】Kardio - Instant Heart Rate Monitor|最夯免費app-綠色工廠好玩App

###FREE FOR A LIMITED TIME!###Kardio is the world’s best mobile heart rate measurement app!This method is trusted by cardiologists for use in clinical trials.How does it works?Kardio detects a color change in your finger each time your heart beats to show you your heartbeat!Place the tip of your index finger on the iPhone’s camera lens to detect your pulse and real-time graph will show you every heartbeat like the oximeters used in hospitals.FEATURES: √ Heart rate measurement  √ Real-time Heart Rate graph (PPG)√ Data storage√ Pulse waveform graphs with Heart Rate Average √ Export data to Apple Health App √ Sharing to Twitter and Facebook- How does Kardio record accurate BPM data?Every time your heart beats, the blood volume in your finger increases. Though it’s not visible to human eyes, digital cameras can detect the change, since a finger with a higher blood volume will absorb more light, and conversely, reflect less light back at the camera. Kardio captures video of your finger, then distills it into RGB channels that are analyzed to determine a rough BPM based on reflectivity. The technology is accurate to within three beats per minute. ###FREE FOR A LIMITED TIME!###